Acoustical expression of arousal in conflict situations in tree shrews (Tupaia belangeri)
Acoustical expression of arousal in conflict situations in tree shrews (Tupaia belangeri)
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DOI：
10.1007/s00359-007-0236-8
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发表时间：
2007-05
期刊：
影响因子：
--
通讯作者：
S. Schehka;K. Esser;E. Zimmermann
中科院分区：
文献类型：
--
作者：
S. Schehka;K. Esser;E. Zimmermann
对人类和非人类灵长类动物的实证研究表明，交流声音表达了信号者情绪状态的强度。在本研究中，我们研究了沟通的声音在诱导社会互动的一夫一妻制的哺乳动物，树。为了表示它们不愿意交配，雌性树鼩对陌生的雄性表现出防御性的威胁，它们会发出不同的尖叫声。我们假设，相互作用的伙伴之间的距离以及男性对女性的行为表明了感知的社会威胁的强度，从而女性的唤醒状态。为了探索这一假设，我们分析了一个女性和一个陌生的男性之间的社会互动诱导期间发出的通信声音的动态变化。详细的视频和声音分析表明，唤醒状态可靠地预测通信声音结构的变化。距离的减小和雄性接近雌性都导致音节基频和重复率的增加。这些研究结果支持人类和非人类灵长类动物的可比结果，并表明，共同的编码规则，在通信的声音管辖的声音冲突调节哺乳动物。
Empirical research on human and non-human primates suggests that communication sounds express the intensity of an emotional state of a signaller. In the present study, we have examined communication sounds during induced social interactions of a monogamous mammal, the tree shrew. To signal their unwillingness to mate, female tree shrews show defensive threat displays towards unfamiliar males paralleled by acoustically variable squeaks. We assumed that the distance between interacting partners as well as the behavior of the male towards the female indicates the intensity of perceived social threat and thereby the arousal state of a female. To explore this hypothesis we analyzed dynamic changes in communication sounds uttered during induced social interactions between a female and an unfamiliar male. Detailed videographic and sound analyzes revealed that the arousal state predicted variations in communication sound structure reliably. Both, a decrease of distance and a male approaching the female led to an increase in fundamental frequency and repetition rate of syllables. These findings support comparable results in human and non-human primates and suggest that common coding rules in communication sounds govern acoustic conflict regulation in mammals.